On 28/11/2019 21:43, Mathew Newton wrote:

Any ideas what could cause the transformer to fail? Do I dare rejoice
that I've fixed the boiler, only to find out soon (Christmas Day
probably) that there is an external component (e.g. fan?) that might
be overloading the transformer causing it to fail? Or could it just
be age / poor design?

Hard to say from here... might be worth having a chat with the guys at
CET and see what the likely causes are. (you can also send em your dead
PCB and get a recon in its place for the next time!)

https://www.cetltd.com/



--
Cheers,

John.

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